Longitudinal connecting bolt for subway track

Abstract

The utility model discloses a subway track longitudinal connecting bolt which comprises a connecting column, an adjusting rod with an I-shaped section is arranged in a movable channel arranged on the inner side of the connecting column in a sliding mode, a threaded column is fixedly connected to the end, away from the movable channel, of the adjusting rod, and a locking structure is connected between the adjusting rod and the connecting column. The locking structure can adjust the length of the bolt so as to meet the mounting requirements of different lengths; according to the utility model, through the arrangement of the clamping structure, particularly after the hexagonal thread of the dismounting sleeve is slipped, when the dismounting sleeve needs to be dismounted and replaced, the two clamping blocks are pinched by the two pull blocks to move oppositely, so that one ends of the inclined surfaces of the two clamping blocks are both retracted into the moving groove, and the two clamping blocks do not limit and block the dismounting sleeve any more; therefore, the disassembly and assembly sleeve can be taken down from the direction installation seat for replacement, and the situation that disassembly and assembly of longitudinal connection of the subway rail are affected due to hexagonal thread slipping of the disassembly and assembly sleeve is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of subway track bolts, in particular to a subway track longitudinal connecting bolt. Background Art

[0002] Subway track longitudinal connecting bolts are important components used to connect subway tracks, usually made of high-strength steel. Their function is to fix and connect adjacent tracks, ensure the stability and flatness of the tracks, and ensure the safety and smoothness of train travel.

[0003] Metro track longitudinal connection bolts are usually installed at the track joints, and the adjacent tracks are fixed together by bolts to form a complete track system. This can effectively reduce the displacement and swing between the tracks and improve the overall stability and durability of the track.

[0004] The existing subway track longitudinal connecting bolts have the following disadvantages during use:

[0005] On the one hand, the length of the bolt is fixed, and the threaded part of the bolt is fixed in length, which makes it impossible to meet the use requirements of different installation situations and limits the scope of use;

[0006] Secondly, one end of the bolt is fixed with a hexagonal cap head by welding. However, during the loading and unloading process, the six corners of the hexagonal cap head are prone to thread slippage. Once the thread slips, the hexagonal cap head cannot be disassembled and replaced, resulting in the inconvenience of the disassembly tool for loading and unloading the bolt, which brings inconvenience to the connection and installation of the subway track. For this reason, we have designed a subway track longitudinal connection bolt to solve the above problem. Utility Model Content

[0007] The utility model aims to solve the shortcomings in the prior art and proposes a subway track longitudinal connecting bolt.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A subway track longitudinal connecting bolt, the bolt comprising a connecting column, an adjusting rod with an I-shaped cross section sliding in a movable channel provided on the inner side of the connecting column, a threaded column fixedly connected to one end of the adjusting rod away from the movable channel, a locking structure connected between the adjusting rod and the connecting column, the locking structure being able to adjust the length of the bolt to meet installation requirements of different lengths;

[0010] One end of the connecting column away from the threaded column is fixedly connected to a limit plate, and the end of the limit plate away from the connecting column is fixedly connected to a square mounting seat, and an outer movable sleeve of the square mounting seat is provided with a disassembly sleeve, and the end of the square mounting seat away from the connecting column is equipped with a clamping structure for fixing the disassembly sleeve, and the clamping structure is used to disassemble and replace the disassembly sleeve.

[0011] Preferably, the locking structure comprises a T-shaped socket provided on the outer side of the connecting column, the T-shaped socket is connected to the movable channel, and a screw is movably inserted into the T-shaped socket.

[0012] Preferably, a plurality of screw holes matched with one end of a screw are formed on one side wall of the adjusting rod, and the plurality of screw holes are arranged in an equidistant array on one side wall of the adjusting rod.

[0013] Preferably, the clamping structure comprises two symmetrically arranged movable grooves opened at one end of the square mounting seat away from the connecting column, and a clamping block with an I-shaped cross section is slidably arranged in each of the movable grooves.

[0014] Preferably, the ends of the two clamping blocks facing away from each other are both provided with inclined surfaces, and the ends of the two clamping blocks facing each other are fixedly connected to the inner wall of the movable groove via a spring.

[0015] Preferably, pull blocks are fixedly connected to the outer sides of the two clamping blocks.

[0016] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, through the setting of the locking structure, when the length of the threaded column needs to be adjusted, the screw can be loosened so that the adjusting rod can be moved and extended in the movable channel, thereby making the length of the bolt adjustable to meet the use requirements of different subway track longitudinal connections;

[0017] By setting the clamping structure, especially after the hexagonal thread of the disassembly sleeve is stripped, when the disassembly sleeve needs to be disassembled and replaced, the two clamping blocks are pinched by the two pulling blocks to move relative to each other, so that one end of the inclined surface of the two clamping blocks is retracted into the moving groove, and then the two clamping blocks no longer limit the disassembly sleeve, so that the disassembly sleeve can be removed from the direction mounting seat for replacement, so as to prevent the disassembly sleeve from stripping due to the hexagonal thread and affecting the disassembly and assembly of the longitudinal connection of the subway track. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional first-view structural schematic diagram of a subway track longitudinal connecting bolt proposed by the utility model;

[0019] Figure 2 This is a three-dimensional second-view structural schematic diagram of a subway track longitudinal connecting bolt proposed by the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the three-dimensional structure of a connecting column of a subway track longitudinal connecting bolt after being cut open.

[0021] In the figure: 1. connecting column; 2. adjusting rod; 21. threaded column; 3. locking structure; 31. screw; 32. screw hole; 4. limit plate; 41. square mounting seat; 42. disassembly and assembly sleeve; 5. clamping structure; 51. clamping block; 52. pulling block; 53. spring; 54. inclined plane. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Example

[0024] On the one hand, the length of the bolt is fixed, and the threaded part of the bolt is fixed in length, which makes it impossible to meet the use requirements of different installation situations and limits the scope of use;

[0025] Secondly, one end of the bolt is welded with a hexagonal cap, but during the installation and removal process, the six corners of the hexagonal cap are prone to thread slippage. Once the thread slips, the hexagonal cap cannot be disassembled and replaced, resulting in the inconvenience of the disassembly tool for loading and unloading the bolt, which in turn brings inconvenience to the connection and installation of the subway track;

[0026] For this purpose, refer to Figure 1-3 A subway track longitudinal connecting bolt, the bolt comprises a connecting column 1, an adjusting rod 2 with an I-shaped cross section slides in a movable channel provided on the inner side of the connecting column 1, a threaded column 21 is fixedly connected to one end of the adjusting rod 2 away from the movable channel, a locking structure 3 is connected between the adjusting rod 2 and the connecting column 1, and the locking structure 3 can adjust the length of the bolt to meet the installation requirements of different lengths;

[0027] One end of the connecting column 1 away from the threaded column 21 is fixedly connected to a limit plate 4, and the end of the limit plate 4 facing away from the connecting column 1 is fixedly connected to a square mounting seat 41. The outer movable sleeve of the square mounting seat 41 is provided with a disassembly sleeve 42, and the end of the square mounting seat 41 facing away from the connecting column 1 is equipped with a clamping structure 5 for fixing the disassembly sleeve 42, and the clamping structure 5 is used to disassemble and replace the disassembly sleeve 42.

[0028] The thickness of the square mounting seat 41 is greater than the thickness of the disassembly sleeve 42 .

[0029] Furthermore, as attached Figure 1-3As shown in the figure, in order to facilitate the fixation of the adjusting rod 2 after the length is adjusted, a locking structure 3 is provided, which includes a T-shaped socket opened on the outer side of the connecting column 1, and the T-shaped socket is connected to the movable channel. A screw 31 is movably inserted into the T-shaped socket, and a plurality of screw holes 32 matching one end of the screw 31 are opened on one side wall of the adjusting rod 2. The plurality of screw holes 32 are arranged in an equidistant array on one side wall of the adjusting rod 2.

[0030] Furthermore, as attached Figure 1-3 As shown in the figure, in order to facilitate the installation or disassembly of the disassembly sleeve 42, a clamping structure 5 is provided, including two symmetrically arranged movable grooves opened at one end of the square mounting seat 41 away from the connecting column 1, and a clamping block 51 with an I-shaped cross-section is slid in the movable groove. The ends of the two clamping blocks 51 that are away from each other are provided with an inclined surface 54, and the opposite ends of the two clamping blocks 51 are fixedly connected to the inner wall of the movable groove by a spring 53, and the outer sides of the two clamping blocks 51 are fixedly connected to a pull block 52.

[0031] Among them, the inclined surface 54 at one end of the clamping block 51 is used to install the disassembly sleeve 42. When the disassembly sleeve 42 is mounted on the square mounting seat 41, the two clamping blocks 51 can be squeezed, so that the two clamping blocks 51 move relative to each other until the disassembly sleeve 42 is attached to the limit plate 4, so that under the reverse action of the two springs 53, the two clamping blocks 51 can be ejected to achieve the limit locking of the disassembly sleeve 42.

[0032] Embodiment: When the subway track longitudinal connection bolt is used, when the length of the threaded column 21 needs to be adjusted, the screw 31 can be loosened so that the adjustment rod 2 can be moved and extended in the movable channel, thereby making the length of the bolt adjustable to meet different subway track longitudinal connection requirements;

[0033] Secondly, especially after the hexagonal thread of the disassembly sleeve 42 is stripped, when the disassembly sleeve 42 needs to be replaced, the two pull blocks 52 are used to pinch the two clamping blocks 51 to move relative to each other, so that one end of the inclined surface 54 of the two clamping blocks 51 is retracted into the moving groove, and then the two clamping blocks 51 no longer limit the disassembly sleeve 42, so that the disassembly sleeve 42 can be removed from the direction mounting seat for replacement, so as to prevent the disassembly sleeve 42 from having stripped hexagonal thread and affecting the disassembly and assembly of the longitudinal connection of the subway track.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of protection claimed by the utility model. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A subway track longitudinal connecting bolt, the bolt comprising a connecting column (1), characterized in that: An adjusting rod (2) having an I-shaped cross section is slidably arranged in a movable channel arranged on the inner side of the connecting column (1); a threaded column (21) is fixedly connected to one end of the adjusting rod (2) away from the movable channel; a locking structure (3) is connected between the adjusting rod (2) and the connecting column (1); and the locking structure (3) can adjust the length of the bolt so as to meet installation requirements of different lengths; One end of the connecting column (1) away from the threaded column (21) is fixedly connected to a limiting disk (4), and one end of the limiting disk (4) away from the connecting column (1) is fixedly connected to a square mounting seat (41). An outer movable sleeve of the square mounting seat (41) is provided with a disassembly sleeve (42). One end of the square mounting seat (41) away from the connecting column (1) is provided with a clamping structure (5) for facilitating fixing of the disassembly sleeve (42). The clamping structure (5) is used to disassemble and replace the disassembly sleeve (42).

2. A subway track longitudinal connecting bolt according to claim 1, characterized in that: The locking structure (3) comprises a T-shaped socket provided on the outside of the connecting column (1), the T-shaped socket being connected to the movable channel, and a screw (31) being movably inserted into the T-shaped socket.

3. A subway track longitudinal connecting bolt according to claim 2, characterized in that: A plurality of screw holes (32) matched with one end of a screw (31) are provided on one side wall of the adjusting rod (2); the plurality of screw holes (32) are arranged in an equidistant array on one side wall of the adjusting rod (2).

4. The subway track longitudinal connecting bolt according to claim 1, characterized in that: The clamping structure (5) comprises two symmetrically arranged movable grooves opened at one end of the square mounting seat (41) away from the connecting column (1), and a clamping block (51) with an I-shaped cross section slides in each of the movable grooves.

5. A subway track longitudinal connecting bolt according to claim 4, characterized in that: The ends of the two clamping blocks (51) that are separated from each other are each provided with an inclined surface (54), and the ends of the two clamping blocks (51) that are opposite to each other are each fixedly connected to the inner wall of the movable groove via a spring (53).

6. A subway track longitudinal connecting bolt according to claim 5, characterized in that: Pull blocks (52) are fixedly connected to the outer sides of the two clamping blocks (51).

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